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|
package main
import (
"bufio"
"fmt"
"io"
"io/ioutil"
"log"
"mime/multipart"
"net/http"
"net/url"
"os"
"path/filepath"
"strings"
"github.com/gabriel-vasile/mimetype"
)
func deniedPfx(pfx string) bool {
cPfx := filepath.Clean(pfx)
for _, p := range denyPfxs {
if strings.HasPrefix(cPfx, p) {
return true
}
}
return false
}
func dispFile(w http.ResponseWriter, uFilePath string) {
if deniedPfx(uFilePath) {
htErr(w, "access", fmt.Errorf("forbidden"))
return
}
fp := filepath.Clean(uFilePath)
s := strings.Split(fp, ".")
log.Printf("Dsiposition file=%v ext=%v", fp, s[len(s)-1])
switch strings.ToLower(s[len(s)-1]) {
case "url", "desktop", "webloc":
gourl(w, fp)
case "zip":
listZip(w, fp)
case "7z":
list7z(w, fp)
case "tar", "rar", "gz", "bz2", "xz", "tgz", "tbz2", "txz":
listArchive(w, fp)
case "iso":
listIso(w, fp)
default:
dispInline(w, fp)
}
}
func downFile(w http.ResponseWriter, uFilePath string) {
if deniedPfx(uFilePath) {
htErr(w, "access", fmt.Errorf("forbidden"))
return
}
f, err := os.Stat(uFilePath)
if err != nil {
htErr(w, "Unable to get file attributes", err)
return
}
w.Header().Set("Content-Type", "application/octet-stream")
w.Header().Set("Content-Disposition", "attachment; filename=\""+filepath.Base(uFilePath)+"\";")
w.Header().Set("Content-Length", fmt.Sprint(f.Size()))
w.Header().Set("Cache-Control", *cacheCtl)
streamFile(w, uFilePath)
}
func dispInline(w http.ResponseWriter, uFilePath string) {
if deniedPfx(uFilePath) {
htErr(w, "access", fmt.Errorf("forbidden"))
return
}
f, err := os.Stat(uFilePath)
if err != nil {
htErr(w, "Unable to get file attributes", err)
return
}
fi, err := os.Open(uFilePath)
if err != nil {
htErr(w, "Unable top open file", err)
return
}
mt, err := mimetype.DetectReader(fi)
if err != nil {
htErr(w, "Unable to determine file type", err)
return
}
fi.Close()
w.Header().Set("Content-Type", mt.String())
w.Header().Set("Content-Disposition", "inline")
w.Header().Set("Content-Length", fmt.Sprint(f.Size()))
w.Header().Set("Cache-Control", *cacheCtl)
streamFile(w, uFilePath)
}
func streamFile(w http.ResponseWriter, uFilePath string) {
if deniedPfx(uFilePath) {
htErr(w, "access", fmt.Errorf("forbidden"))
return
}
fi, err := os.Open(uFilePath)
if err != nil {
htErr(w, "Unable top open file", err)
log.Printf("unable to read file: %v", err)
return
}
defer fi.Close()
rb := bufio.NewReader(fi)
wb := bufio.NewWriter(w)
bu := make([]byte, 1<<20)
for {
n, err := rb.Read(bu)
if err != nil && err != io.EOF {
htErr(w, "Unable to read file", err)
log.Printf("unable to read file: %v", err)
return
}
if n == 0 {
break
}
wb.Write(bu[:n])
}
wb.Flush()
}
func uploadFile(w http.ResponseWriter, uDir, eSort string, h *multipart.FileHeader, f multipart.File, rw bool) {
if !rw {
htErr(w, "permission", fmt.Errorf("read only"))
return
}
if deniedPfx(uDir) {
htErr(w, "access", fmt.Errorf("forbidden"))
return
}
defer f.Close()
o, err := os.OpenFile(uDir+"/"+filepath.Base(h.Filename), os.O_RDWR|os.O_CREATE, 0644)
if err != nil {
htErr(w, "unable to write file", err)
return
}
defer o.Close()
rb := bufio.NewReader(f)
wb := bufio.NewWriter(o)
bu := make([]byte, 1<<20)
for {
n, err := rb.Read(bu)
if err != nil && err != io.EOF {
htErr(w, "Unable to write file", err)
return
}
if n == 0 {
break
}
wb.Write(bu[:n])
}
wb.Flush()
log.Printf("Uploaded Dir=%v File=%v Size=%v", uDir, h.Filename, h.Size)
redirect(w, *wfmPfx+"?dir="+url.QueryEscape(uDir)+"&sort="+eSort+"&hi="+url.QueryEscape(h.Filename))
}
func saveText(w http.ResponseWriter, uDir, eSort, uFilePath, uData string, rw bool) {
if !rw {
htErr(w, "permission", fmt.Errorf("read only"))
return
}
if deniedPfx(uDir) {
htErr(w, "access", fmt.Errorf("forbidden"))
return
}
if uData == "" {
htErr(w, "text save", fmt.Errorf("zero lenght data"))
return
}
err := ioutil.WriteFile(uFilePath+".tmp", []byte(uData), 0644)
if err != nil {
htErr(w, "text save", err)
return
}
f, err := os.Stat(uFilePath + ".tmp")
if err != nil {
htErr(w, "text save", err)
return
}
if f.Size() != int64(len(uData)) {
htErr(w, "text save", fmt.Errorf("temp file size != input size"))
return
}
err = os.Rename(uFilePath+".tmp", uFilePath)
if err != nil {
htErr(w, "text save", err)
return
}
log.Printf("Saved Text Dir=%v File=%v Size=%v", uDir, uFilePath, len(uData))
redirect(w, *wfmPfx+"?dir="+url.QueryEscape(uDir)+"&sort="+eSort+"&hi="+url.QueryEscape(filepath.Base(uFilePath)))
}
func mkdir(w http.ResponseWriter, uDir, uNewd, eSort string, rw bool) {
if !rw {
htErr(w, "permission", fmt.Errorf("read only"))
return
}
if deniedPfx(uDir) {
htErr(w, "access", fmt.Errorf("forbidden"))
return
}
if uNewd == "" {
htErr(w, "mkdir", fmt.Errorf("directory name is empty"))
return
}
uB := filepath.Base(uNewd)
err := os.Mkdir(uDir+"/"+uB, 0755)
if err != nil {
htErr(w, "mkdir", err)
log.Printf("mkdir error: %v", err)
return
}
redirect(w, *wfmPfx+"?dir="+url.QueryEscape(uDir)+"&sort="+eSort+"&hi="+url.QueryEscape(uB))
}
func mkfile(w http.ResponseWriter, uDir, uNewf, eSort string, rw bool) {
if !rw {
htErr(w, "permission", fmt.Errorf("read only"))
return
}
if deniedPfx(uDir) {
htErr(w, "access", fmt.Errorf("forbidden"))
return
}
if uNewf == "" {
htErr(w, "mkfile", fmt.Errorf("file name is empty"))
return
}
fB := filepath.Base(uNewf)
f, err := os.OpenFile(uDir+"/"+fB, os.O_RDWR|os.O_EXCL|os.O_CREATE, 0644)
if err != nil {
htErr(w, "mkfile", err)
return
}
f.Close()
redirect(w, *wfmPfx+"?dir="+url.QueryEscape(uDir)+"&sort="+eSort+"&hi="+url.QueryEscape(fB))
}
func mkurl(w http.ResponseWriter, uDir, uNewu, eUrl, eSort string, rw bool) {
if !rw {
htErr(w, "permission", fmt.Errorf("read only"))
return
}
if deniedPfx(uDir) {
htErr(w, "access", fmt.Errorf("forbidden"))
return
}
if uNewu == "" {
htErr(w, "mkurl", fmt.Errorf("url file name is empty"))
return
}
if !strings.HasSuffix(uNewu, ".url") {
uNewu = uNewu + ".url"
}
fB := filepath.Base(uNewu)
f, err := os.OpenFile(uDir+"/"+fB, os.O_RDWR|os.O_EXCL|os.O_CREATE, 0644)
if err != nil {
htErr(w, "mkfile", err)
return
}
// TODO(tenox): add upport for creating webloc, desktop and other formats
fmt.Fprintf(f, "[InternetShortcut]\r\nURL=%s\r\n", eUrl)
f.Close()
redirect(w, *wfmPfx+"?dir="+url.QueryEscape(uDir)+"&sort="+eSort+"&hi="+url.QueryEscape(fB))
}
func renFile(w http.ResponseWriter, uDir, uBn, uNewf, eSort string, rw bool) {
if !rw {
htErr(w, "permission", fmt.Errorf("read only"))
return
}
if deniedPfx(uDir) {
htErr(w, "access", fmt.Errorf("forbidden"))
return
}
if uBn == "" || uNewf == "" {
htErr(w, "rename", fmt.Errorf("filename is empty"))
return
}
fB := filepath.Base(uNewf)
err := os.Rename(
uDir+"/"+uBn,
uDir+"/"+fB,
)
if err != nil {
htErr(w, "rename", err)
return
}
redirect(w, *wfmPfx+"?dir="+url.QueryEscape(uDir)+"&sort="+eSort+"&hi="+url.QueryEscape(fB))
}
func moveFiles(w http.ResponseWriter, uDir string, uFilePaths []string, uDst, eSort string, rw bool) {
if !rw {
htErr(w, "permission", fmt.Errorf("read only"))
return
}
if deniedPfx(uDir) || deniedPfx(uDst) {
htErr(w, "access", fmt.Errorf("forbidden"))
return
}
lF := ""
for _, f := range uFilePaths {
fb := filepath.Base(f)
err := os.Rename(
uDir+"/"+fb,
filepath.Clean(uDst+"/"+fb),
)
if err != nil {
htErr(w, "move", err)
return
}
lF = fb
}
redirect(w, *wfmPfx+"?dir="+url.QueryEscape(uDst)+"&sort="+eSort+"&hi="+url.QueryEscape(lF))
}
func deleteFiles(w http.ResponseWriter, uDir string, uFilePaths []string, eSort string, rw bool) {
if !rw {
htErr(w, "permission", fmt.Errorf("read only"))
return
}
if deniedPfx(uDir) {
htErr(w, "access", fmt.Errorf("forbidden"))
return
}
for _, f := range uFilePaths {
err := os.RemoveAll(uDir + "/" + filepath.Base(f))
if err != nil {
htErr(w, "delete", err)
return
}
}
redirect(w, *wfmPfx+"?dir="+url.QueryEscape(uDir)+"&sort="+eSort)
}
|
